Results 21 to 30 of about 286,701 (303)

Numerical Simulation Analysis of Influences of Microgroove Texture on Friction Performance of Expansion Cone

Shiyou jixie, 2023
The current evaluation of expandable tubulars focuses on the expansion quality and neglects the friction performance of the expansion cone.Given this,the elastoplastic theoretical derivation is performed to calculate the counteractive surface pressure ...
Wang Xin, Guo Huijuan, Xu Binggui, Zhao Yuncai, Wang Hongwei, Zheng Bin   +5 more
doaj  

Testing Grease Consistency

Lubricants, 2021
Because of the influential role of consistency in selecting a grease for a given application, accurate and meaningful methodologies for its measurements are vitally important.
Alan Gurt, Michael M. Khonsari
doaj   +1 more source

X-ray residual stress measurements on cold-drawn steel wire [PDF]

, 1982
The interplanar spacing d{hkl} versus sin2 ψ distributions were measured for the 211, 310, 220 and 200 reflections from severely cold-drawn 0.7% C steel wire with a diameter of 0.25 mm. From the shape of the curves it was concluded that, as well as a 110
Naughton, B.P., Verbraak, C.A., Willemse, P.F.   +2 more
core   +8 more sources

Comprehensive Experimental and COMSOL-Based Investigation of Electric Field Distribution in Extra High-Voltage Cable Joints

IEEE Access
This study presents a comprehensive experimental and numerical analysis of electric field distribution in extra high-voltage (EHV) cable joint structures using six different solid insulating materials.
Cagri Koksal, Ertugrul Adiguzel, Emrah Dokur, Aysel Ersoy   +3 more
doaj   +1 more source

An analysis of the influence of clay structure on piezocone penetration test results

Shuiwen dizhi gongcheng dizhi, 2023
The effect of clay structure on the piezocone penetration test results and its mechanism are not very clear, the structured Cam-clay model is firstly program-implemented in the ABAQUS software.
Rui JIA, Dong ZHAO, Huayang LEI
doaj   +1 more source

Spontaneous curvature cancellation in forced thin sheets

, 2006
In this paper we report numerically observed spontaneous vanishing of mean curvature on a developable cone made by pushing a thin elastic sheet into a circular container.
C. Isenberg, D. J. Struik, E. H. Mansfield, L. D. Landau, Tao Liang, Thomas A. Witten, W. H. Press   +6 more
core   +1 more source

Free Surface Effects on Normal Stress Measurements in Cone and Plate Flow

Applied Rheology, 2007
The effects of free surface shape on normal stress difference measurements in cone and plate flow are investigated. The analysis shows that the stress field is significantly altered by deviations of the free surface from an ideal (spherical) shape.
Venerus David C.
doaj   +1 more source

A new energy-absorbing bolt used for large deformation control of tunnel surrounding rock

International Journal of Mining Science and Technology, 2022
In order to control the large deformation of tunnel surrounding rock, a new energy-absorbing bolt is developed. This bolt can be transformed into a rigid support when the deformation of the surrounding rock reaches the length of the sleeve tube, thus ...
Junbao Wang, Wei Liu, Zhanping Song, Lingfeng Li, Shijin Feng, Yun Cheng   +5 more
doaj   +1 more source

Light-cone fluctuations and the renormalized stress tensor of a massless scalar field

, 2012
We investigate the effects of light-cone fluctuations over the renormalized vacuum expectation value of the stress-energy tensor of a real massless minimally coupled scalar field defined in a ($d+1$)-dimensional flat space-time with topology ${\cal R ...
Casimir H. B. G., De Paola R. D. M., Ford L. H., Grib A. A., Ishimaru A., Kirsten K., Ruggiero J. R., Ruggiero J. R.   +7 more
core   +1 more source

A cell-based smoothed finite element method for kinematic limit analysis [PDF]

, 2010
This paper presents a new numerical procedure for kinematic limit analysis problems, which incorporates the cell-based smoothed finite element method with second-order cone programming.
Anderheggen, Andersen, Andersen, Andersen, Andersen, Belytschko, Belytschko, Belytschko, Bordas, Bottero, Capsoni, Chaaba, Chen, Chen, Chen, Chen, Christiansen, Christiansen, Ciria, Dai, Flanagan, Gaydon, Gross-Weege, Huh, Huh, Jiang, Krabbenhoft, Le, Le, Le, Le, Liu, Liu, Liu, Liu, Liu, Liu, Lyamin, Makrodimopoulos, Makrodimopoulos, Munoz, Nagtegaal, Nguyen, Nguyen-Thanh, Nguyen-Thoi, Nguyen-Xuan, Nguyen-Xuan, Nguyen-Xuan, Nguyen-Xuan, Nguyen-Xuan, Prandtl, Sloan, Smith, Sze, Tin-Loi, Vicente da Silva, Wang, Yoo, Zouain, Zouain   +59 more
core   +1 more source